A person called Castor Dawson (from India, Calcutta can you believe) under other names too telephones you or has some woman telephone saying that he has received reports directly from Microsoft that your computer has infections and they are not detected by Windows defender or any other anti virus/spy-ware program. IT IS A SCAM and they want to take control of your computer and compromise it for a fee ranging from $100 to $440. They then enter your computer and compromise it. Remember that Microsoft never call you unless you ask. DO NOT BE caught by this highly sophisticated crime syndicate. TURN THEN IN to your State AG and FBI and Interpol too if necessary. They supposedly operated from New York but the number routes to India. Surprise, surprise! Their website is www.livepcsolutions.com and looks neat but it is fraudulent.